Manufacturing hollow bodies from pulp fiber



19 March 27 P. E. WINNERTZ MANUFACTURING HOLLOW BODIES FROM EULP FIBER 3 Sheets-Sheet 1 Filed June 22, 1925 arch 7 P. E. WINNERTZ MANUFACTURING HOLLOW BODIES FROM PULP FIBER Filed June 22, 1925 3 Sheets-Sheet 2 Fig.3.

Inventor arch 7 P. E. WINNERTZ MANUFACTURING HOLLOW BODIES FROM PULP FI BER Filed June 22. 1925 5 Sheets-Sheet 5 LIB (1J5! EH i i i L I: 1

Patented Malt- 15, 1927. in

PETER ERNST wrimnarz, or name; GERMANY.

MANUFACTURING HOLLOW BODIES FROM PULP FIBER.

Application filed June 22, 1925, Serial No.

This invention refers to improvements in the manufacture ofhollow bodies from paper pulp or, more strictly speaking, from fibers of pulp and 'in particular from the fibers contained in the fiber-carrying white water or efliuvia from the pulp chests, the screens, the paper machine and other instrumentalities and stages in the pulp and paper making and treating proce:ses. Inaccordance with my invention, couching moulds or aggregates thereof adapted for progressive movement, in accordance with the different stages of. treatment or operation, are displaceably disposed above havea corresponding perforated or sieve-like mould of wire gauze or equivalent material. It is an object of this invention to improve the course of manufacture and to provide for a better and more complete utilization of the fibrous material even in the dilute state, as compared. with theinstrumentalities heretofore in; use. Other objects and advantages will appear as the specification proceeds.

The inventionwill be described with particular referenc'eoto the accompanying drawings, showing by way of example and diagrammatically various forms of embodiments of the principle of this invention. In Fig. 1 an arran ement according to my invention is shown conventionally in lon itudinal section; Fig. 2 is a plan view of t e arrangement according to Fig, 1 with the upper moulds removed; Figs. 3 and 4 are longitudinal sections of two further examples of embodiments of'this invention; Fig. 5"is a modification showing both front View and fractional plan View thereof; Fig. 6 is a front view of another modification; Figs. 7 and 8 are details to be referred to.

Referring particularly to Figs. 1 and 2 of the drawings, the arrangement and the mode of operation are substantially as fol-' lows:

After the pulp water chest ar in the beginning of the [manufacturing process hasbeen filled with pulp *water, .a layer of fibers is deposited in the well known manner by aspiration of air upon the row of'sieve-like or wire-gauze moulds 72 and the mould table 0, is raised in the usual manner, for instance by hydraulic pressure, until the lower moulds b have been moved into engagement with the upper moulds d, which ha pen .to be above the moulds b and in tliese upper mou-ldsd the layer of fibers is couched and- 38,898, and in Germany February 10, 1924.

retained.- Thereupon the mould table a for the lower moulds again descends into the pulp water container a the row of dower moulds b aspirates a fresh layer of fibers.

from the contents of the container a, which in the meantime or between the different stages of operation has been fed with a new charge of fiber-containing liquid; the mould table 0, is again raisedand enters, the row of upper moulds d, and after the oouching operation of a second layer of fibers upon the layer already contained in the upper row al the table with the lower moulds lsaagain lowered into the pulp water containera 'Thereupon the carriage 'h supporting the upper moulds in certain spaced relationship to each other and running with the wheels 7 upon the guide rails g is moved towards the row of sieve-moulds b until the row d of the uper moulds is centered above the row of lower moulds b tainer a is fed at the same time; this feeding operation is preferably effected by automatic means. The rows 1),, and 6 of lower moulds will now both aspirate layers of fiber, the mould table 0 of the lower moulds is again raised in the manner herebefore described and a third layer of fibers is couched onto the two layers already contained in the row (Z, of upper moulds and by means of the row of lower moulds 'b, the first layer of fibers is transferred to the row of upper The pulp water conmoulds 4Z After the descent of the mould table 0 into the pulp water container which has been re-charged inlthe meantime and the aspiration of fresh layers of fibers onto the lower row of moulds b and b the cycle of operations is repeated in such a manner that a fourth layer of fibers is couched onto 'the three layers of fibers of the upper row d and a'second layer of fibers is couched onto the already existing first row of, fibers "in the upper row of moulds d Thereupon the mould table a, with thellower moulds is again lowered into the pulp water container a It will therefore be seen that now there are four layers of fibers in the 'upper'moulds Z and two layers of fiber in the uppermoulds (Z I I The carriage h with the upper moulds is now, preferably automatically, further displaced inthe same direction until the row 1 of upper moulds d is substantially centrally L disposed above the row of lower moulds b From-the pulp water container. 0 which has been re-charged in the meantime all three rows of lower moulds b b 6 mounted upon the moulding table aspirate fresh layers of fiber, as hereinbefore de scribed, which are transferred in the manner referred to to the rows of upper moulds d d 03, mounted thereabove. This cycle is repeated so that then there will be a totality 1 has arrived above the row of sieve-moulds b With the charge of pulp water 'filled up and supplemented, the tables of the sievemoulds b b b, will then cooperate in the manner hereinbefore described with the rows of moulds d d 61 above the same, while the row of pressing moulds i, by any suitable means, thusfor instance by a hydraulic ele vation of the pressing mould table is introduced into the row of upper moulds d thereby squeezing and forcing out the excess of water from the six superimposed layers of fibersin said upper rows, for such a time until the layers of fiber have twice been formed in each of the rows of sieve-moulds b b b and have been couched and transferred to the rows of upper mouldsd d d suspended thereabove. Upon the second descent of the sieve-mould table 0 the pressing.

mould table is, is also lowered into'its initial position. Thereupon the carria e h with the upper moulds is advanced unti the row of upper moulds d, has arrived above the row of pressing moulds i, of the pressing table 70,, and the mode of operation of the sieve mould table c 'and of the pressing-mould table is, will now proceed [with t e entire series of moulds in the manner des ribed;

After the working tables 0 and 70 have been finally caused to descend, the carriage 72 advances the upper moulds upon the guiderail 9 in the same direction, by which means the row of upper moulds d, has arrived above the lower moulds Z which may be raised and lowered by mechanical, electrical or hydraulic means or the like and the row of upper moulds d, has at the same time placed itself above the row of upper moulds 6 Now, the formation of layers of fibers and respectively the squeezing and desiccation of the same in the upper moulds will take place simultaneously in themanner d.e' scribed and at the same time the 'sufliciently desiccated hollow bodies of pulp or paper may then be expelled from the upper moulds d, which, for this purpose, may be made extensible or laterally spread and are received by the lower moulds 1,, after, by means of the expelling table m the lower moulds have been raised and introduced to a certain depth into the upper moulds d As soon as the expelled hollow pulp or paper bodies have become disposed upon the lower moulds 1,, the working table :r, descends with the. same, thus for instance through an aperture 0 in the floor or ceiling m unto the bottom of the drying room p. After this has been elfected and after the working tables 0, and is, have been again lowered with all the lower moulds mounted thereon, the carriage h with the upper moulds is returned to its initial position shown in Fig. 1 of the drawing, so that the now emptied row of upper moulds d, registers with the lower mould b and the completely compressed and substantially desiccated row of upper moulds d will register with the expelling table m situated on the other side of the pulp water container a and adapted to be lowered through an aperture 0 of the fioor or ceiling m. Also, the row of upper moulds (i with the semi-desiccated six layers of pulp will now be above the row of pressing moulds i of the pressing. table 70 the row of upper moulds. d, with the couched six superimposed layers of pulp above the row of pressing moulds 2',- of the pressing table 70 thero'w of upper moulds d, with the four layers of pulp above the row of sieve-moulds b, ofthe sieve-mould table 0 provided, .in the additional pulp chest (1 andcarrying for instance two'rows of sieve-moulds, and the row of upper moulds d with two superimposed layers of pulp will be situated above the rows of sievemoulds. b, of the sieve-mould table 0 p The various steps of procedure of the formation of ulp layers or fiber layers for the feeding of the two chests or pulp water containersa a with pulp water and for the compression, squeezing and expelling of the hollow body of fibers, will now go on upon the righthandside of the device in accordance with Fig. 1- in the same manner, as hereinbefore described.

After, in the course of this operation, each of the sets of sieve-moulds 6 ,11) 6 have produced. in the upper moulds (Z (i d, above the same two fresh layers of fiber and" after the sufficiently expressed and desiccated hollow bodies of paper or pulp have been expelled from the upper moulds (Z, and have been taken up by the lower moulds Z and. after the couched layers of-fiber or pulp. in the upper moulds d, and d, have been. expressed by the rows of pressing moulds i andJI of the compression table k, and the moulding tables 0 m is, and 0 have de- 1 scended again, the carriage h with the upper moulds is shifted so as to move in the direc tion towards the sieve-moulds 6 as already described, and the course of operation pr0 ceeds in the same manner as heretofore 1 moulds (Z and are received by the lower moulds Z whereupon the carriage h is returned to 1ts 1n1t1al posit on shown 1n Fig.

'1 of the drawing. l

' As appears from Fig. 3, the moulding. machine may also be arranged in .such a manner that the rows of upper moulds (Z on the carriage it may be so disposed as to be lowered and raised by mechanically, electrically or hydraulically operated gears and rackson the bars y to cooperate with the lower moulds b which are stationarily ar ranged in the pulp water chests or containers a' with partitions z. The pressingmould tables kwith the pressing moulds'z' are likewise stationarily arranged in this exemplification, while the expelling tables a: with the lower moulds Z for the reception of the hollow bodies of paper, pulp or the like are only vertically reciprocated with. relation to the drying chamber 1). In all other respects the mode of operation of the rows of mould is similar to what has been described with reference to Figs. 1 and 2.

Fig. 4 is a diagram of an arrangement in which two interconnected rows of upper moulds cl are operated simultaneously and correspond to double rows of lower moulds b, i, and Z on the working tables. In this mannerthe-efiiciency of the plant may be further increased by increasing the amount of simultaneously operating rows of moulds.

In order to effect the drying, the hollow bodies of pulp or paper are manually removed from the expelling moulds Z Z accor ing to Figs. 1 and 2, which have bebn' lowered below the floor'm and as far as the. bottom of the drying chamber 1); they. arethen mounted on the drying moulds g which may, for instance, be mounted on axially rotatable suspension cars r suspended from overhead rails or the like in the well known manner and with these may be slowlymoved in succession by any suitable mechanical driving means through a drying channel I heated with air or the like.

of the drying carriages is effected with com-1'.- parative ease, because in the continuous 5 The charging operation of the moulding machine ,for such solid hollowbodies the same can be taken off r simultaneously by several operators from the expelling moulds Z and Z At the discharging point of the drying channel 8, in-

dicated in dotted lines in-Fig. 2, one or more workmen maytake. off the dried bodies from the drying moulds of the drying carriage rand transfer them upon an endless conveyingapron t which is moVed in the A moulds! will always bei lplacedunderthe direction of the 'arroW(Fig. .2) and which carries the finished cups, vats, barrels or similar hollow bodies thus produced to the place h of storage or of further treatment thereof.

With the arrangement according to Fig. 5, sn1all hollo.w bodies .of pulp or paper having thin walls are manufactured in such a manner that the upper-moulds which are laterally displaceable with the supporting plate h and are adapted to be raised and lowered and of which two similar'groups d, and d are provided, will each receive simultaneously a layer'of fibers which have been deposited upon thesieve moulds b in the pulp container tank a by aspiration in thewell known-manner. In the operating position of the plant shown in the upper part of Fig. 5.the group d of upper moulds,

for instance, has already been charged with from the sieve-mould b'. After this has been I effected, the groups of upper moulds are again raised; the carrying plate is -moved to the, right until the set of'moulds d of the upper .moulds will, be in alignment abovethe sieve-moulds b, while the row of upper moulds d, is in exact alignment above the drying moulds Z at the right-hand side of the device. .Upon the descent of the upper moulds, the hollowbodies contained 1n the group J, of upper moulds are transferred to the drying moulds lthrebelow and the previously emptied.- upper moulds (l, receive a new layer of'fibrous material. Thisflcycle of operations is repeatedf'over again, and, at the same, time,'-t he"ca'rrying p ate 1?. with the drying mOIIldS- Z'FlSCOIrGS- pondingl advanced each timtbyrotating on its arms, so that a. fre'slhfigroup of drying,-

uppe s The d y for instance, 'compri heated by steam,--'hot- -a1r, by e means or; the like. Thedry n ay.also be accelerated from the outside by a current of air which, if desired, may be spe. cially heated. At the end of a complete'ro- 'tation'of the carrying plate-nfllt'or the drying moulds Z or, sometimes: even earlier the ready dried hollow bodies are taken off; from the drying moulds.

The modified arrangement shown in Fig. 6 is substantially distin ishedfrom the arrangement shown in ig. 5 by the fact menu 1- that irrFig. 6 two rotating tables 11., and 01.

with drying moulds Z Z rotatable on verectrical ice tical shafts l and 2, respectively, are provided on both sides of the pulp-water tank a with the sieve-moulds b. In other respects the mode of operation of the device is similar to those hereinbefore described. In another modified arrangement of the invention shown in Fig. 7 the drying moulds Z are disposed on an endless band or the like a, which is placed on two drums 3 with horizontally disposed rotating axes.' In the further modification of the drum arrangement shown in Fig. 8, the drying moulds'l are directly mounted upon a drum a, rotatable on a horizontal axis 4. Both 1 of these arrangements make it possible for the readyv dried hollow bodies to drop off automatically, if required, and upon any suitable conveying -device, for instance.

Various other modifications and alterations are admissible within the scope and spirit of this invention, as will be governed by difi'ering conditions of application, these being all comprised within the meaning of the claims hereunto appended.

I claim z- I 1. The method of manufacturing hollow fiber-bodies and the like, which consists in causing spacedly and parallelly superimposed rows of supporting means and of receiving means to-be laterally and axially moved into alignment with each other, immersing certain of the supporting means into fiber-carrying liquids, therebydepositing layers of fiber on said supporting means,. superimposing and transferring a certain number of such layers in successive stages to the supporting means, and periodically advancing said supporting means in stages corresponding to the number of layers,

transferred to them between each period of their movement, then moving the receiving means in the same direction into alignment with a set of unimmersed supporting means in successive stages, then engaging the layers-containing receiving means with the cor- V responding unimmersed supporting means and compressing the layers, detaching the compressed fiber-bodies from the receiving means, and receiving them upon other nonimmersed supporting means, then returning the rows of receiving means to their initial position, and transferring layers of fibers to the now empty receiving means, and

compressing and detaching the compressed layers of fibers in and from the remaining receiving means in successive stages.

2. The method of manufacturing hollow fiber-bodies and the like, which consists in immersing a certain number of supporting means in a'fiber-containing, liquid, thereby depositing layers of fibers on said supporting means, moving a plurality of spacedly disposed receiving means successively into alignment with said supporting means, periodically and superimposing and delivering layers of fibers from the suppporting means onto the receiving means, moving the completely charged receiving means past the supporting means, compressing the completely charged fiber-bodies obtained in successive stages, while simultaneously charging other receiving means, and detaching the fully compressed fiber-bodies, then returning the receiving means-to their initial position in alignment with one of the fiber-depositing supporting means, and other receiving means into alignment with other supporting means, corresponding in number to the freely exposed first mentioned supporting means, momentarily unaligned with receiving means, then moving the supporting means in, the first mentioned operative direction into alignment with the next following supporting means, and superimposing and depositing layers of fibers" onto the receiving means, and respectively compressing and detaching the completed fiber-bodies obtained.

- 3. In a device of the kind described, a plurality'of spaced supporting means, and a plurality of equally spaced receiving means in parallel spaced relation to the supporting means, means adapted to move the receiving and supporting means inter: mittently longitudinally and axially into successive operative engagement with each other and to return them-to the initial, position, fiber-containing tanks surrounding certain sets of supporting means, adapted to produce bodies of fibers in the receiving means, the unsurrounded supporting means serving as compressing and detaching means for the fiber bodies contained in the receiving means.

4. In a device of the kind described, a plurality of equally laterally spaced .supporting means, a plurality of likewise equally spaced receiving means in parallel spaced relation to the supporting means andlongitudinally reciprocable, 'means for axially moving the supporting and recciving means intermittently into successive axial alignment with each other, a main .tank, surrounding a certain number of consecutively arranged supporting means, and other tanks surrounding a lesser number of consecutively arranged supporting means, and unsurrounded consecutively arranged supportin means on either sides of said tanks an adapted for the compression and detaching of the paper bodies from the receiving means, said tanks containing a supply of fiber-carrying liquid, and drying means for the completed fiberbodies.

5. In a device of the kind described, a plurality of supporting means, a tank, adapted to contain fiber-carrying liquid, surrounding said supporting means, a plurality of spaced receiving means in parallel spaced relation to the supporting means,

means for moving the receiving means longitudinally and laterally of said supporting means, and means for moving the receiving and supporting means into axial engagement with each other, so as to produce a body of fibers in the receiving means, a supporting carrier, a plurality of compressing and detaching supports on said carrier and substantially flush with the other supporting means, and means to dry the detached, pre- 10 viously compressed fiber-bodies on the detaching supports.

' In testimony whereof I aflix my signature.

PETER ERNST WINNERTZ. 

